CN209838944U - Tapered roller bearing with lubricating oil leakage prevention structure - Google Patents

Abstract

A tapered roller bearing with a lubricating oil leakage prevention structure comprises a fixing ring and an O-shaped sealing ring, wherein the fixing ring and the O-shaped sealing ring are arranged in a bearing inner cavity between two retainers, the O-shaped sealing ring is fixedly arranged at a joint of a butt joint of an inner ring A and an inner ring B by the fixing ring, and the O-shaped sealing ring is hermetically arranged in a space enclosed by the fixing ring, the inner ring A and the inner ring B; the contact surfaces of the inner ring A and the inner ring B are completely attached, and the contact surfaces are composed of a contact surface A arranged along the radial direction, a contact surface B arranged obliquely and a contact surface C arranged along the radial direction, so that the problem of leakage of lubricating oil can be solved, and the purpose of load transfer is realized by arranging the contact surfaces with different angles.

Description

Tapered roller bearing with lubricating oil leakage prevention structure

Technical Field

The utility model relates to a double-row tapered roller bearing, what specifically say so is a tapered roller bearing with prevent lubricating oil leakage structure.

Background

The complete double-row tapered roller bearing comprises a whole outer ring, two separated inner rings, a pair of retainers and tapered rollers arranged on the retainers, wherein an oil filling hole is formed in the outer ring and used for filling oil into an inner cavity of the bearing, the inner ring at the position is in a butt joint mode, a joint is arranged between the retainer and the tapered rollers, lubricating oil can flow out from the joint, the storage of the lubricating oil is influenced, the lubricating effect is reduced, external dust or pollution can enter the bearing from the outside, and the existing method for preventing the leakage of the lubricating oil is as follows: (1) the method is characterized in that a hole is formed in the surface position of the tapered roller, an oil passage is difficult to form in the method due to the hardness problem of the bearing, (2) protection is added to the inner wall and the outer wall of an inner ring, a snap ring is added to the inner wall, an O-shaped sealing ring is added to the outer wall to perform internal and external sealing, however, in the mode, other parts are added to the inner wall, and the inner wall and the bearing seat cannot be matched, so that the use of the bearing is influenced, the bearing cannot be used as a universal standard part, and the sealing ring added to the outer wall is not fixed.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a tapered roller bearing with prevent lubricating oil leakage structure not only can solve the leakage problem of lubricating oil, realizes the purpose of shifting load through the contact surface that sets up to have different angles moreover.

In order to realize the technical purpose, the adopted technical scheme is as follows: a tapered roller bearing with a lubricating oil leakage prevention structure comprises an integral outer ring, an inner ring A, an inner ring B, two retainers and tapered rollers, wherein the inner ring A and the inner ring B are arranged in a back-to-back close manner;

the double-row tapered roller bearing further comprises a fixing ring and an O-shaped sealing ring, wherein the fixing ring and the O-shaped sealing ring are arranged in a bearing inner cavity between the two retainers, the O-shaped sealing ring is fixedly arranged at a joint of the butt joint of the inner ring A and the inner ring B through the fixing ring, the fixing ring is annular and consists of an axial ring and a radial ring, the inner ring surface of the axial ring is an inclined ring surface, the inner ring surface of the radial ring is matched with the outer wall of the inner ring A or the outer wall of the inner ring B, and the O-shaped sealing ring is arranged in a space defined by the fixing ring, the inner ring A and the inner;

the contact surfaces of the inner ring A and the inner ring B are completely attached, and the contact surfaces consist of a contact surface A arranged along the radial direction, a contact surface B arranged obliquely and a contact surface C arranged along the radial direction.

The utility model has the advantages that: the joint of the inner ring is sealed by the aid of the fixing ring and the O-shaped sealing ring, the O-shaped sealing ring is fixed, the inner ring surface of the axial ring of the fixing ring can be designed into an inclined ring surface, the O-shaped sealing ring can be well pressed in the stress direction, external pollution is prevented from entering, the contact surface of the inner ring A and the contact surface of the inner ring B are designed into a bent shape, the interference is caused for the entering of pollution, meanwhile, the leakage-proof effect is achieved, other sealing parts do not need to be added on the inner wall of the inner ring, the overall weight of the bearing is reduced, meanwhile, the butt-joint type inner ring A and the butt-joint type inner ring B are in special contact surfaces, the radial height does not need to be considered, and accurate installation in the radial direction can be kept only through.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic cross-sectional view of the fixing ring of the present invention;

FIG. 3 is a partial enlarged view of the present invention;

in the figure: 1. the bearing comprises an outer ring, 2, inner rings A, 3, inner rings B, 4, a retainer, 5, tapered rollers, 6, a fixing ring, 7, an O-shaped sealing ring, 8, a bearing inner cavity, 9, an oil filling hole, 10, an axial ring, 11, a radial ring, 12, contact surfaces A, 13, contact surfaces B, 14 and a contact surface C.

Detailed Description

As shown in figure 1, a tapered roller bearing with lubricating oil leakage prevention structure, be used for low-speed heavy load environment, including a whole outer lane 1, inner circle A2, inner circle B3, two holders 4 and tapered roller 5, inner circle A2 and inner circle B3 paste the setting tightly back to back, generally for the tip sets up back to back, for better lubricated effect of optimization, can thicken the back of the body end, change tapered roller incline direction, raise the back of the body end, make lubricating oil can be better when bearing inner chamber 8 is stored flow to the tapered roller direction.

A retainer 4 is respectively arranged between the inner ring A2 and the inner ring B3 and the outer ring 1, tapered rollers are arranged on the retainers 4, the space between the two retainers 4 is a bearing inner cavity 8, and an oil filling hole 9 communicated with the bearing inner cavity 8 is arranged on the outer ring 1; through 9 interior bearing inner chambers oiling of oil filler point, after finishing injecting lubricating oil, can set up the block and plug up the oil filler point, lubricating oil was thrown away when preventing the bearing rotation.

As shown in fig. 2 and 3, the double-row tapered roller bearing further includes a fixing ring 6 and an O-ring 7, the fixing ring 6 and the O-ring 7 are disposed in a bearing inner cavity 8 between the two cages 4, the O-ring 7 is fixedly disposed at a joint where the inner ring a2 and the inner ring B3 are butted by the fixing ring 6, the fixing ring 6 is annular and is composed of an axial ring 10 and a radial ring 11, an inner ring surface of the axial ring 10 is an inclined ring surface, an inner ring surface of the radial ring 11 is matched with an outer wall of the inner ring a2 or the inner ring B3, and the O-ring 7 is sealingly disposed in a space surrounded by the fixing ring 6, the inner ring a2 and the inner ring B3; the inner ring surface structure of the axial ring 10 can enable the axial ring 10 to be pressed on the surface of the O-shaped sealing ring, the O-shaped sealing ring is further tightly attached to the inner ring surface of the radial ring 10 through pressing deformation, and the sealing effect of the O-shaped sealing ring is fully exerted.

The contact surfaces of the inner ring A2 and the inner ring B3 are completely attached, and the contact surfaces consist of a contact surface A12 arranged along the radial direction, a contact surface B13 arranged obliquely and a contact surface C14 arranged along the radial direction.

The inner ring A and the inner ring B are formed by forging, annealing, turning, quenching, tempering and grinding bearing steel raw materials, the height problem of the inner ring A and the inner ring B in the axial direction does not need to be considered during assembly, the inner ring A and the inner ring B with the same inner diameter are installed by utilizing an equal-diameter axial assembly rod, the assembly of the inner ring A and the inner ring B is completed as long as the contact surfaces are completely attached tightly, and the inner ring A and the inner ring B are restricted mutually through the contact surfaces when other components are installed, so that the installation dislocation can not occur.

When the bearing receives the axial force, contact surface A and contact surface C transmit the axial load each other, and contact surface B is because of the reason of its slope, can be with axial load radial dispersion, make and receive the bearing capacity reduction on inner circle and the tapered roller, can promote the life of whole bearing, otherwise when receiving the radial force, can be to axial dispersion partly, this kind of setting can use under the heavy load condition, through changing the contact surface structure, it is more difficult that external contamination gets into the bearing, inner circle A and inner circle B extrude each other, undertake a part weight of both sides, the contact surface can be better laminate, the extrusion air, need not add sealing member in addition, tiny pollution is more difficult to get into.

Claims (1)

1. The utility model provides a tapered roller bearing with prevent lubricating oil leakage structure, including a whole outer lane (1), inner circle A (2), inner circle B (3), two holders (4) and tapered roller (5), inner circle A (2) and inner circle B (3) paste the setting of clinging to the back of the body, respectively install one holder (4) between inner circle A (2) and inner circle B (3) and outer lane (1), install tapered roller on holder (4), space between two holders (4) is bearing inner chamber (8), be equipped with oil filler point (9) that are linked together with bearing inner chamber (8) on outer lane (1), its characterized in that:

the double-row tapered roller bearing further comprises a fixing ring (6) and an O-shaped sealing ring (7), the fixing ring (6) and the O-shaped sealing ring (7) are arranged in a bearing inner cavity (8) between the two retainers (4), the O-shaped sealing ring (7) is fixedly arranged at a joint where the inner ring A (2) and the inner ring B (3) are in butt joint through the fixing ring (6), the fixing ring (6) is annular and consists of an axial ring (10) and a radial ring (11), the inner ring surface of the axial ring (10) is an inclined ring surface, the inner ring surface of the radial ring (11) is matched with the outer wall of the inner ring A (2) or the outer wall of the inner ring B (3), and the O-shaped sealing ring (7) is arranged in a space surrounded by the fixing ring (6), the inner ring A (2) and the inner ring B (3);

the contact surfaces of the inner ring A (2) and the inner ring B (3) are completely attached, and the contact surfaces consist of a contact surface A (12) arranged along the radial direction, a contact surface B (13) arranged obliquely and a contact surface C (14) arranged along the radial direction.